2921214887 has 4 divisors (see below), whose sum is σ = 2921329800. Its totient is φ = 2921099976.

The previous prime is 2921214859. The next prime is 2921214917. The reversal of 2921214887 is 7884121292.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2921214887 - 2⁶ = 2921214823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921214817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512 + ... + 76437.

It is an arithmetic number, because the mean of its divisors is an integer number (730332450).

Almost surely, 2^2921214887 is an apocalyptic number.

2921214887 is a deficient number, since it is larger than the sum of its proper divisors (114913).

2921214887 is an equidigital number, since it uses as much as digits as its factorization.

2921214887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114912.

The product of its digits is 129024, while the sum is 44.

The square root of 2921214887 is about 54048.2644217185. The cubic root of 2921214887 is about 1429.5120977208.

The spelling of 2921214887 in words is "two billion, nine hundred twenty-one million, two hundred fourteen thousand, eight hundred eighty-seven".